Mayer hopes for professional opportunities in Augsburg, at that time known for instrument making and publishing. About his 3-year stay there is little known. Mayer presumably works for a cartographic publishing house and makes drawings for copper engravings. He meets the instrument maker Georg F. Brander, who is famous for mathematical and optical devices. Mayer probably helps him develop a micrometer. Inspired by this, he later developed his own device: a micrometer for exact lunar observation.
In his last year, he works at Pfeffelschen Verlag, which publishes successfully Mayer’s Mathematical Atlas. Mayer’s equally extensive book on fortification appears.
Tobias Mayer went to Augsburg, where his father had lived during his apprenticeship. He hoped to find in this engraving and instrumentation well-known city a demanding job. But above all, should have played a role in the meantime his half-brother Georg Wilhelm worked there as a copper engraver. Tobias Mayer probably worked in the Pfeffel publishing house, which successfully published his Mathematical Atlas.